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Supplemental Cash Flow Information (Tables) | 3 Months Ended
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Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract] |
Net Changes In Components Of Operating Assets And Liabilities | The following table provides information regarding the net changes in components of operating assets and liabilities.
| Three Months Ended March 31,
| 2014 |  | 2013
(Increase) decrease in: |  |  |
Accounts receivable | $ | 60,046 |  |  | $ | (85,915 | )
Inventories | (11,700 | ) |  | 7,947 |
Other current assets | 41,623 |  |  | 4,736 |
Increase (decrease) in: |  |  |
Accounts payable | (1,867 | ) |  | 57,048 |
Accrued liabilities | (35,184 | ) |  | 6,019 |
Net changes in components of operating assets and liabilities | $ | 52,918 |  |  | $ | (10,165 | )

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